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1. A full-duplex transceiver comprising: a local wireless transmitter coupled to a local transmit antenna having a first polarization, the local wireless transmitter configured to transmit a local transmit wireless signal through the local transmit antenna at a carrier frequency; and a local wireless receiver coupled to a local receive antenna having a second polarization different from the first polarization, the local wireless receiver configured to receive a local receive wireless signal through the local receive antenna on the carrier frequency, the local receive wireless signal received concurrently with transmission of the local transmit wireless signal, wherein the local wireless receiver comprises a clock and data recovery circuit to (i) receive a local receive baseband signal derived from the local wireless receive signal, (ii) perform timing recovery on the local receive baseband signal, (iii) recover a digital representation of the local receive baseband signal that is synchronous to a local clock of the recovered digital representation, and (iv) generate a data signal comprising the recovered digital representation, wherein the local wireless transmitter, the local wireless receiver, the local transmit antenna, and the local receive antenna are integrated on a same package; wherein the clock and data recovery circuit operates at a first baseband frequency to obtain the data signal, and wherein the local wireless receiver further comprises a baseband receiving circuit, the baseband receiving circuit operating at a second baseband frequency lower than the first baseband frequency to receive the local receive baseband signal and to generate another data signal based on the local receive baseband signal.
Wireless communication. This invention addresses the challenge of enabling simultaneous transmission and reception of wireless signals on the same carrier frequency within a single device, commonly known as full-duplex communication, while mitigating interference. The invention describes a full-duplex transceiver integrated onto a single package. It includes a local wireless transmitter connected to a transmit antenna with a specific polarization. This transmitter sends a wireless signal at a designated carrier frequency. Concurrently, a local wireless receiver, connected to a receive antenna with a different polarization, receives a wireless signal on the same carrier frequency. The core of the receiver is a clock and data recovery (CDR) circuit. This CDR circuit takes a baseband signal derived from the received wireless signal, performs timing recovery to synchronize with the incoming data, and recovers a digital representation of this baseband signal. This recovered digital representation is synchronous to a local clock and is output as a data signal. The CDR circuit operates at a first baseband frequency. Additionally, the receiver includes a baseband receiving circuit that operates at a second baseband frequency, which is lower than the first baseband frequency. This baseband receiving circuit processes the local receive baseband signal and generates another data signal. The use of different polarizations for the transmit and receive antennas, along with the integrated design and the specific operation of the receiver circuits, facilitates efficient full-duplex operation.
2. The full-duplex transceiver of claim 1 , wherein the local wireless receiver comprises: a demodulator to demodulate a local receive wireless signal to a local receive baseband signal.
A full-duplex transceiver system enables simultaneous transmission and reception of wireless signals on the same frequency channel, addressing interference and latency challenges in wireless communication. The transceiver includes a local wireless receiver designed to process incoming signals while the system transmits. The receiver incorporates a demodulator that converts a local receive wireless signal into a local receive baseband signal, facilitating further signal processing. This demodulation step is critical for extracting data from the received wireless signal, ensuring accurate and efficient communication. The transceiver's architecture supports high-speed data transfer by minimizing signal interference between transmit and receive paths, making it suitable for applications requiring real-time communication, such as wireless backhaul, 5G networks, and IoT devices. The demodulator's role in converting high-frequency wireless signals to baseband ensures compatibility with digital processing components, enhancing overall system performance. This design improves spectral efficiency and reduces hardware complexity, addressing limitations in traditional half-duplex systems.
3. The full-duplex transceiver of claim 2 , wherein the demodulator comprises an on-off keying demodulator.
A full-duplex transceiver system enables simultaneous transmission and reception of signals, addressing challenges in wireless communication where interference between transmitted and received signals can degrade performance. The transceiver includes a demodulator designed to extract data from received signals, with a specific implementation using an on-off keying (OOK) demodulator. OOK is a modulation technique where data is represented by the presence or absence of a carrier signal, making it suitable for low-power and low-complexity applications. The demodulator processes incoming signals to distinguish between these states, converting them into digital data. This approach enhances signal integrity and reduces interference in full-duplex operations, particularly in environments where signal separation is critical. The transceiver may also incorporate additional components, such as filters or amplifiers, to further improve signal quality and reliability. By integrating an OOK demodulator, the system achieves efficient and robust data recovery in full-duplex communication scenarios.
4. The full-duplex transceiver of claim 2 , wherein the demodulator comprises an envelope detector without employing a synthesizer to demodulate the local receive wireless signal.
A full-duplex transceiver system enables simultaneous transmission and reception of wireless signals on the same frequency channel. A key challenge in such systems is isolating the transmitted signal from the received signal to prevent interference. This invention addresses this problem by incorporating a demodulator with an envelope detector that does not rely on a synthesizer for demodulating the local receive wireless signal. The envelope detector extracts the amplitude variations of the received signal, allowing for demodulation without the complexity and power consumption of a synthesizer. This approach simplifies the transceiver design while maintaining signal integrity. The transceiver may also include a transmitter for generating the outgoing wireless signal and a receiver for capturing the incoming signal. The demodulator processes the received signal to extract data, and the envelope detection method ensures efficient and low-power operation. This design is particularly useful in applications where power efficiency and simplicity are critical, such as in wireless communication devices operating in constrained environments. The absence of a synthesizer reduces hardware complexity and cost while improving reliability.
5. The full-duplex transceiver of claim 1 , wherein a data rate of the data signal is at least 1 Gbps.
A full-duplex transceiver system enables simultaneous bidirectional communication over a single channel, addressing the need for high-speed data transmission in applications such as wireless communication, fiber optics, and wired networks. The transceiver includes a transmitter and receiver operating at the same frequency, with mechanisms to isolate transmitted and received signals to prevent interference. The invention ensures high data integrity and efficiency by maintaining signal separation while supporting high-speed data rates. A key feature is the ability to achieve a data rate of at least 1 Gbps, enabling real-time, high-bandwidth applications such as video streaming, cloud computing, and high-frequency trading. The system may incorporate analog or digital signal processing techniques, including echo cancellation, adaptive filtering, and dynamic range adjustment, to optimize performance. The transceiver may also include error correction and modulation schemes to enhance reliability and throughput. The design ensures compatibility with existing communication protocols while improving spectral efficiency and reducing latency. This technology is particularly valuable in environments requiring low-latency, high-capacity communication, such as 5G networks, data centers, and industrial automation.
6. The full-duplex transceiver of claim 1 , wherein a distance between the local transmit antenna and the local receive antenna is less than 10 millimeters.
This invention relates to full-duplex transceivers, which enable simultaneous transmission and reception of signals on the same frequency channel, addressing challenges like self-interference in wireless communication systems. The transceiver includes a local transmit antenna and a local receive antenna, where the distance between these antennas is less than 10 millimeters. This close proximity helps minimize signal leakage and interference between the transmitting and receiving paths, improving signal quality and system performance. The transceiver may also incorporate techniques such as analog cancellation, digital cancellation, or hybrid cancellation to further suppress self-interference. The design ensures efficient use of spectrum resources while maintaining reliable communication in applications like wireless networks, radar systems, and full-duplex communication devices. The compact antenna arrangement enhances integration into small-form-factor devices without compromising functionality. The invention aims to optimize full-duplex operation by reducing physical separation between transmit and receive antennas, thereby mitigating interference and improving overall system efficiency.
7. The full-duplex transceiver of claim 1 , wherein the carrier frequency is above 20 GHz.
This invention relates to full-duplex transceivers operating at carrier frequencies above 20 GHz. Full-duplex communication systems enable simultaneous transmission and reception of signals on the same frequency channel, improving spectral efficiency. However, at high frequencies, challenges such as self-interference, signal distortion, and hardware limitations arise, making reliable full-duplex operation difficult. The transceiver includes a transmitter and receiver configured to operate at a carrier frequency exceeding 20 GHz. The system employs techniques to mitigate self-interference, which occurs when transmitted signals leak into the receiver. This may involve analog or digital cancellation methods, antenna isolation, or signal processing to suppress interference. The transceiver may also incorporate high-frequency components like millimeter-wave antennas, low-noise amplifiers, and power amplifiers optimized for operation above 20 GHz. Additionally, the system may use beamforming or directional antennas to enhance signal quality and reduce interference. The invention addresses the need for high-frequency full-duplex communication in applications such as 5G and beyond, satellite communications, and radar systems. By operating above 20 GHz, the transceiver leverages wider bandwidths for higher data rates while overcoming traditional limitations of lower-frequency systems. The design ensures robust performance in high-frequency environments, enabling efficient bidirectional communication.
8. The full-duplex transceiver of claim 1 , wherein the local wireless transmitter comprises: a transmit baseband circuit to obtain a local transmit baseband signal based on an input local data signal received from a local source apparatus; and a transmit modulator to modulate the carrier signal to generate a local transmit wireless signal centered at the carrier frequency according to the local transmit baseband signal.
This invention relates to full-duplex wireless communication systems, specifically addressing the challenge of simultaneous transmission and reception of wireless signals at the same frequency. The system includes a full-duplex transceiver with a local wireless transmitter designed to minimize self-interference, enabling efficient bidirectional communication. The local wireless transmitter comprises a transmit baseband circuit and a transmit modulator. The transmit baseband circuit processes an input local data signal from a connected source apparatus, converting it into a local transmit baseband signal. The transmit modulator then modulates a carrier signal according to this baseband signal, generating a local transmit wireless signal centered at the carrier frequency. This modulated signal is transmitted while the transceiver simultaneously receives incoming signals at the same frequency, leveraging techniques to suppress interference from its own transmission. The design ensures high data throughput and reliability in environments where simultaneous two-way communication is critical, such as wireless backhaul networks or advanced radio access systems. The transmitter's modular structure allows for flexible integration with different modulation schemes and carrier frequencies, adapting to various communication standards. The invention improves spectral efficiency by enabling full-duplex operation, reducing the need for separate frequency bands for uplink and downlink communication.
9. The full-duplex transceiver of claim 8 , wherein the transmit modulator comprises an on-off keying modulator to modulate the carrier signal using on-off keying.
A full-duplex transceiver system enables simultaneous transmission and reception of signals on the same frequency channel, addressing challenges in wireless communication where interference between transmitted and received signals can degrade performance. The transceiver includes a transmit modulator that converts data into a modulated carrier signal for transmission, and a receive demodulator that extracts data from incoming signals. To enhance efficiency and reduce complexity, the transmit modulator employs an on-off keying (OOK) technique, which modulates the carrier signal by switching it on and off in accordance with the data being transmitted. OOK is a simple and energy-efficient modulation method, particularly suitable for low-power applications. The transceiver also includes a self-interference cancellation mechanism to mitigate the interference caused by the transmitted signal when received by the transceiver's own receiver. This cancellation ensures that the received signal can be accurately demodulated despite the presence of the transmitted signal. The system is designed to operate in environments where spectral efficiency and low-power operation are critical, such as in wireless sensor networks or IoT devices. By integrating OOK modulation with self-interference cancellation, the transceiver achieves reliable full-duplex communication while maintaining simplicity and energy efficiency.
10. The full-duplex transceiver of claim 8 , wherein the local wireless transmitter further comprises: a duobinary encoder to perform duobinary encoding the local transmit data signal to produce a local recoded transmit digital signal with three possible levels: a zero level and two non-zero levels with opposite signs.
A full-duplex transceiver system enables simultaneous transmission and reception of wireless signals on the same frequency channel, addressing interference and bandwidth limitations in wireless communication. The transceiver includes a local wireless transmitter that processes transmit data signals to minimize self-interference and improve signal integrity. The transmitter incorporates a duobinary encoder, which converts the local transmit data signal into a recoded digital signal with three distinct levels: a zero level and two non-zero levels of opposite polarity. This encoding technique reduces the signal bandwidth while maintaining data integrity, allowing for efficient use of the available spectrum. The duobinary encoder ensures that the transmitted signal has a compact spectral footprint, which is critical for full-duplex operation where transmitted and received signals must coexist without significant mutual interference. The system leverages this encoding method to enhance communication performance in environments where spectral efficiency and interference mitigation are paramount.
11. A method for operating a full-duplex transceiver, the method comprising: transmitting, by a local wireless transmitter, a local transmit wireless signal having a carrier frequency through a local transmit antenna that applies a first polarization to the local transmit wireless signal; receiving, by a local wireless receiver through a local receive antenna that is integrated on a same package as the local wireless receiver, the local wireless transmitter and the local transmit antenna, a local receive wireless signal having the carrier frequency and having a second polarization different than the first polarization; wherein the local wireless receiver comprises a clock and data recovery circuit to (i) receive a local receive baseband signal derived from the local wireless receive signal, (ii) perform timing recovery on the local receive baseband signal, (iii) recover a digital representation of the local receive baseband signal that is synchronous to a local clock of the recovered digital representation, and (iv) generate a data signal comprising the recovered digital representation, wherein the clock and data recovery circuit operates at a first baseband frequency to obtain the data signal; and wherein the local wireless receiver further comprises a baseband receiving circuit, the baseband receiving circuit operating at a second baseband frequency lower than the first baseband frequency to receive the local receive baseband signal and to generate another data signal based on the local receive baseband signal.
This invention relates to full-duplex wireless communication systems, specifically addressing the challenge of simultaneous transmission and reception of signals at the same carrier frequency. The method involves a local wireless transmitter sending a signal with a first polarization through an integrated antenna, while a local wireless receiver on the same package receives a signal with a different polarization at the same carrier frequency. The receiver includes a clock and data recovery circuit that processes the received baseband signal, performing timing recovery to synchronize the digital representation of the signal with a local clock. This circuit operates at a higher baseband frequency to generate a data signal. Additionally, the receiver has a baseband receiving circuit operating at a lower frequency to further process the baseband signal and produce another data signal. The dual-frequency operation allows for efficient signal processing and synchronization in full-duplex communication, where the transmitter and receiver share the same frequency band but use different polarizations to avoid interference. The integrated design minimizes signal leakage and improves performance in high-frequency wireless applications.
12. The method of claim 11 , further comprising: demodulating, by a demodulator of the local wireless receiver, the local receive wireless signal to generate a local receive baseband signal.
A wireless communication system addresses the challenge of efficiently processing received signals in a local wireless receiver. The system includes a local wireless receiver configured to receive a wireless signal and a demodulator that processes the received signal. The demodulator extracts the baseband information from the modulated wireless signal, converting it into a local receive baseband signal. This demodulation step is critical for further signal processing, such as decoding or error correction, to retrieve the transmitted data accurately. The system may also include additional components, such as an antenna for capturing the wireless signal and a processor for handling the demodulated baseband signal. The demodulation process ensures that the received signal is properly converted into a usable form for subsequent stages in the communication system, improving reliability and performance in wireless data transmission. The invention focuses on enhancing signal processing efficiency in wireless receivers by integrating a dedicated demodulation step to handle the received wireless signals effectively.
13. The method of claim 12 , wherein demodulating the local receive wireless signal comprising applying on-off keying demodulation.
This invention relates to wireless communication systems, specifically methods for demodulating local receive wireless signals. The problem addressed is the need for efficient and reliable demodulation techniques in wireless communication, particularly in scenarios where signals may be weak or subject to interference. The method involves demodulating a local receive wireless signal by applying on-off keying (OOK) demodulation. OOK is a simple and effective modulation technique where the presence of a carrier wave represents a binary '1' and its absence represents a binary '0'. This approach is particularly useful in low-power or low-complexity wireless systems, such as sensor networks or IoT devices, where energy efficiency and simplicity are critical. The demodulation process involves detecting the presence or absence of the carrier signal in the received wireless signal. This can be done using envelope detection, energy detection, or other techniques that distinguish between the two states. The output of the demodulation is a binary signal representing the transmitted data. This method is part of a broader system for wireless communication that includes transmitting and receiving wireless signals, processing the received signals, and extracting data from them. The use of OOK demodulation ensures that the system can operate efficiently with minimal computational overhead, making it suitable for resource-constrained environments. The technique is particularly advantageous in applications where power consumption and hardware complexity must be minimized.
14. The method of claim 12 , wherein demodulating the local receive wireless signal comprises applying an envelope detector to the local receive wireless signal without employing a synthesizer.
This invention relates to wireless communication systems, specifically methods for demodulating a local receive wireless signal without using a synthesizer. The problem addressed is the complexity and cost associated with traditional demodulation techniques that rely on synthesizers, which are often power-intensive and require precise frequency control. The invention provides a simplified approach by using an envelope detector to extract the modulated signal directly from the local receive wireless signal. The envelope detector operates by tracking the amplitude variations of the received signal, effectively recovering the original modulated data without the need for frequency conversion or synchronization with a local oscillator. This method reduces hardware complexity, power consumption, and cost while maintaining reliable demodulation performance. The invention is particularly useful in low-power wireless applications, such as IoT devices, where minimizing component count and energy usage is critical. The envelope detection process involves filtering and amplifying the received signal to isolate the envelope, which contains the transmitted information. This technique is compatible with various modulation schemes, including amplitude-shift keying (ASK) and on-off keying (OOK), where the signal amplitude directly represents the data. By eliminating the synthesizer, the system achieves a more efficient and scalable solution for wireless communication.
15. The method of claim 11 , further comprising: receiving, by a clock and data recovery circuit, a local receive baseband signal derived from the local wireless receive signal; performing, by the clock and data recovery circuit, timing recovery on the local receive baseband signal; recovering, by the clock and data recovery circuit, a digital representation of the local receive baseband signal that is synchronous to a local clock of the recovered digital representation; and generating, by the clock and data recovery circuit, a data signal comprising the recovered digital representation.
This invention relates to wireless communication systems, specifically to methods for improving signal processing in receivers. The problem addressed is the need for accurate timing recovery and synchronization in wireless receivers to reliably extract digital data from received signals. The invention describes a method for processing a local wireless receive signal in a receiver. A local receive baseband signal is derived from the local wireless receive signal, which is then processed by a clock and data recovery circuit. The circuit performs timing recovery on the baseband signal to align it with a local clock. The circuit then recovers a digital representation of the baseband signal that is synchronized to the local clock, generating a data signal containing the recovered digital information. This method ensures precise synchronization between the received signal and the local clock, improving data integrity and reducing errors in wireless communication systems. The invention may be used in various wireless applications where reliable data recovery is critical, such as in high-speed wireless networks or IoT devices.
16. The method of claim 15 , wherein a data rate of the data signal is at least 1 Gbps.
A system and method for high-speed data transmission involves encoding and transmitting data signals at a rate of at least 1 Gbps. The method includes generating a data signal from input data, where the data signal is encoded to reduce interference and improve transmission efficiency. The encoded data signal is then transmitted over a communication channel, such as a wired or wireless link, to a receiver. The receiver decodes the received signal to recover the original data. The encoding process may involve techniques such as error correction, modulation, or signal shaping to enhance data integrity and throughput. The system is designed to support high-speed communication, ensuring reliable data transfer at rates of 1 Gbps or higher. The method may also include adaptive adjustments to the transmission parameters based on channel conditions to maintain optimal performance. This approach is particularly useful in applications requiring fast and reliable data transmission, such as telecommunications, data centers, and high-speed networking.
17. The method of claim 11 , wherein a distance between the local transmit antenna and the local receive antenna is less than 10 millimeters.
This invention relates to wireless communication systems, specifically addressing challenges in short-range, high-frequency communication where signal integrity and interference are critical. The method involves a local transmit antenna and a local receive antenna positioned in close proximity, with the distance between them being less than 10 millimeters. This proximity minimizes signal loss and interference, ensuring reliable data transmission over short distances. The system may include a transmitter that generates a high-frequency signal, which is then transmitted via the local transmit antenna. The local receive antenna captures the signal, and a receiver processes it to extract data. The close placement of the antennas reduces path loss and enhances signal strength, making the system suitable for applications requiring precise, low-latency communication, such as in wearable devices, medical sensors, or compact electronic modules. The method may also incorporate error correction or modulation techniques to further improve signal quality. By maintaining a fixed, minimal distance between the antennas, the system ensures consistent performance and reduces the need for complex alignment mechanisms. This approach is particularly useful in environments where space is limited, and high-frequency signals are prone to attenuation or distortion.
18. The method of claim 11 , wherein the carrier frequency is above 20 GHz.
This invention relates to wireless communication systems, specifically addressing challenges in high-frequency signal transmission. The method involves transmitting data using a carrier frequency above 20 GHz, which is particularly useful for high-bandwidth applications such as 5G and beyond. High-frequency signals face significant attenuation and interference, making reliable transmission difficult. The method includes modulating a data signal onto a carrier frequency above 20 GHz, then transmitting the modulated signal through a wireless channel. To mitigate signal degradation, the method employs adaptive beamforming techniques to focus the transmitted signal toward a receiver, compensating for path loss and multipath interference. Additionally, the method may use advanced error correction and signal processing to improve data integrity. The system may include a transmitter with a high-frequency antenna array and a receiver with a corresponding array to enhance signal reception. The method also accounts for dynamic adjustments in beam direction and power based on environmental conditions and receiver feedback. This approach enables high-speed, low-latency communication in environments where traditional lower-frequency bands are insufficient. The invention is particularly valuable for applications requiring high data rates, such as mobile broadband, fixed wireless access, and backhaul networks.
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January 19, 2021
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